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參數(shù)資料
| 型號： | AK4705 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 2ch 24bit DAC with AV SCART Switch |
| 中文描述： | 2通道24位DAC，具有影音SCART開關 |
| 文件頁數(shù)： | 18/50頁 |
| 文件大?。?/td> | 660K |
| 代理商： | AK4705 |
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[AK4705]
MS0451-E-01
2007/06
- 18 -
OPERATION OVERVIEW
1. System Reset and Power-down options
The AK4705 should be reset once by bringing PDN pin = “L” upon power-up. The AK4705 has several operation modes.
The PDN pin, AUTO bit, DAPD bit, MUTE bit and STBY bit control operation modes as shown in Table 1 and Table 2.
PDN
pin
bit
bit
0
L
x
x
Mode
AUTO
STBY
MUTE
bit
x
DAPD
bit
x
Mode
Full Power-down
Auto Startup mode
(power-on default)
Standby & mute
Standby
Mute
(DAC power down)
Mute
(DAC operation)
Normal operation
(DAC power down
& Analog input)
Normal operation
(DAC operation)
1
H
1
x
x
x
2
3
H
H
0
0
1
1
1
0
x
x
4
H
0
0
1
1
5
H
0
0
1
0
6
H
0
0
0
1
7
H
0
0
0
0
x: Don’t Care
Table 1. Operation Mode Settings
Mode
Register
Control
MCLK,
BICK,
LRCK
Not
needed
Audio Bias
Level
Video
Output
TVFB,
TVSB
VCRSB
0
Full Power-down
NOT
available
Power
down
Hi-Z
Hi-Z
Pull-down
(2)
1
Auto Startup mode
(power-on default)
No video
input
Video
input (3)
Available
Active
Active
(4)
Hi-Z/
Active
Active
Active
2
Standby & mute
Power
down
Active
Power
down
3
Standby
Mute
4
(DAC power down)
Mute
(DAC operation)
Normal operation
(DAC power down
& Analog input)
Normal operation
(DAC operation)
5
Needed
6
Not
needed
Active
(1)
7
Needed
Notes:
(1)
TVOUTL/R are muted by VMUTE bit in the default state.
(2)
Internally pulled down by 120kohm(typ) resistor.
(3)
Video input to TVVIN or VCRVIN.
(4)
VCRC outputs 0V for termination.
Table 2. Status of each operation modes
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相關代理商/技術參數(shù) |
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|---|---|
| AK4705AEQ | 制造商:AKM 制造商全稱:AKM 功能描述:AK4705A Evaluation Board Rev.0 |
| AK4705VQ | 功能描述:IC AV SCART SWITCH 64LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時間 標準包裝:1,000 |
| AK4706 | 制造商:AKM 制造商全稱:AKM 功能描述:2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| AK4706_10 | 制造商:AKM 制造商全稱:AKM 功能描述:2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| AK4706VQ | 制造商:AKM 制造商全稱:AKM 功能描述:2ch 24bit DAC with AV Switch & HD/SD Video Filter |
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